CN205385288U - Arc light protection system and have this arc light protection system's cubical switchboard - Google Patents

Abstract

The utility model relates to an arc light protection system, which comprises an arc acquisition module for collecting arc signals in a circuit; a current detection module for collecting current growth signals in a circuit; a control module and the arc acquisition module and the current The detection module is electrically connected, the control module simultaneously detects the arc signal collected by the arc collection module and the current growth signal collected by the current detection module, and the control circuit is powered off, wherein the arc collection module An address recording unit is included to record the address of the arc signal in the circuit. The above-mentioned arc light protection system judges whether there is a fault by detecting the arc light and current of the switch cabinet, and promptly and quickly cuts off the power to the circuit, so as to avoid the expansion of the accident. Moreover, the above-mentioned arc acquisition module also includes a recording unit for recording the current generated in the circuit. The address of the arc signal, so that the staff can quickly check the accident in the subsequent maintenance process.

Description

Arc light protection system and switchgear with the arc light protection system

technical field

The utility model relates to the field of electric equipment, in particular to an arc light protection system and a switchgear with the arc light protection system.

Background technique

With the development of modern power system, the capacity of distribution network is gradually increasing, and the impact of medium voltage bus failure on the safe operation of power system is becoming more and more serious. It not only causes the medium-voltage switchgear to be severely burned, causing the accident to expand, but also may burn down expensive transformers, causing serious economic losses.

From the perspective of actual application, the existing protection schemes cannot meet the requirements of fast removal of bus faults or the scope of protection requirements. It is urgent to adopt a new type of circuit protection system to solve the problem of high failure probability and delay of low-voltage bus in current practical applications. Cutting out a fault leads to the development of a fault that can cause significant economic loss or personal safety concerns.

Utility model content

Based on this, it is necessary to provide a new type of arc protection system for the above-mentioned existing protection schemes in switchgear circuits that cannot meet the technical problems of quickly removing bus faults or protecting other parts of the circuit.

An arc light protection system, comprising an arc collection module for collecting arc signals in a circuit; a current detection module for collecting current growth signals in a circuit; a control module electrically compatible with the arc collection module and the current detection module connected to analyze the signals collected by the arc collection module and the current detection module, and the control module simultaneously detects the arc signal collected by the arc collection module and the current growth signal collected by the current detection module , the control circuit is powered off, wherein the arc collection module includes an address recording unit for recording the address of the arc signal in the circuit. .

The above-mentioned arc light protection system utilizes the corresponding arc signal and current growth signal collected by the arc collection module and the current detection module, and its control module simultaneously detects the arc signal collected by the arc collection module and the arc signal collected by the current detection module. The current growth signal will control the power-off of the circuit, so that the arc and current of the switch cabinet can be detected in real time, and whether there is a fault can be judged and the circuit can be powered off in time and quickly, so as to avoid the expansion of the accident. Moreover, the above-mentioned arc acquisition module also includes a recording unit , which is used to record the address of the arc signal in the circuit, so that the staff can quickly check the accident in the subsequent maintenance process.

In one of the embodiments, the arc collection module includes a display unit electrically connected to the recording unit for displaying the address of the arc signal in the circuit recorded by the recording unit.

In one of the embodiments, the arc collection module includes an arc sensor for detecting arc signals in the circuit.

In one of the embodiments, the arc sensor adopts a passive arc probe.

In one of the embodiments, the number of the arc sensors is less than 8.

In one of the embodiments, the current detection module includes a current transformer, which is used to detect the current increase signal in the circuit.

In one of the embodiments, the control module further includes an alarm unit, which is used to send out an alarm when the control module simultaneously detects the arc signal collected by the arc collection module and the current increase signal collected by the current detection module. Alarm.

In one of the embodiments, the above alarm unit adopts an audio alarm.

In one of the embodiments, the above-mentioned alarm unit adopts an alarm lamp.

A switch cabinet includes the above-mentioned arc protection system.

Description of drawings

Fig. 1 is a schematic diagram of a module of a preferred embodiment of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The utility model discloses a switch cabinet, in which an arc light protection system 100 is provided. The arc light protection system 100 includes an arc acquisition module 110, a current detection module 120 and a control module 130, wherein the arc acquisition module 110 To collect the arc signal in the circuit, the current detection module 120 is used to detect the current growth signal in the switch cabinet circuit, the control module 130 is electrically connected with the above-mentioned arc collection module and the current detection module, and is used to analyze the arc collection module 110 and the current The arc signal and current growth signal collected by the detection module 120, when a short circuit occurs in the circuit in the switch cabinet, a photoelectric arc occurs in the circuit, and at the same time as the arc signal collected by the arc collection module 110, its current detection module 120 also After collecting the current increase signal, the control module 130 issues a trip command to power off the circuit.

Specifically, the above-mentioned arc collection module 110 includes an address recording unit 111 and a display unit 112, through which the address recording unit 111 can record the signal position of the arc light generated in the circuit, and the display unit 112 is electrically connected to the above-mentioned address recording unit 111 for The address of the arc signal in the circuit recorded by the above-mentioned address recording unit 111 is displayed, so that the follow-up staff can find the cause of the accident more quickly when checking the cause and repairing.

The above-mentioned arc collection module 110 also includes several arc sensors, which are also distributed in various compartments in the switch cabinet, and are used to detect whether photoelectric arcs occur in circuits at different positions in the switch cabinet. Specifically, the number of the arc sensor is at most 8, and a passive arc probe can be used. The passive arc probe can be transmitted by optical fiber, and has strong anti-electromagnetic interference capability. The passive arc probe will suddenly increase when an arc fault occurs. The light intensity is converted into an electrical signal and sent to the control module 130 . In addition, the sensitivity of the passive arc light probe can be adjusted according to the actual situation on site.

The above-mentioned current detection module 120 includes a current transformer, and the current detection module 120 uses the current transformer to detect the increase signal of the current in the circuit.

The above control module 130 may also include an alarm unit 131. When the control module 130 detects the arc signal collected by the arc collection module 110 and the current increase signal detected by the current detection module 120, the control module 130 controls the alarm unit 131 to send The outside sends out an alarm signal to inform that the external equipment is in an abnormal operating state. The alarm unit 131 can be a sound alarm or an alarm light. Let me repeat.

The above-mentioned arc light protection system 100 utilizes the corresponding arc signal and current growth signal collected by the arc collection module 110 and the current detection module 120, and its control module 130 simultaneously detects the arc signal collected by the arc collection module 110 and the current detection The current growth signal collected by the module 120 controls the circuit to be powered off, so that the arc and current of the switch cabinet can be detected to determine whether there is a fault and quickly power off the circuit, thereby avoiding the expansion of the accident.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be understood as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. An arc protection system, characterized in that: The arc collection module is used to collect the arc signal in the circuit, including an address recording unit for recording the address of the arc signal in the circuit; The current detection module is used to collect the current growth signal in the circuit; A control module electrically connected to the arc collection module and the current detection module, the control module simultaneously detects the arc signal collected by the arc collection module and the current growth signal collected by the current detection module , the control circuit is powered off. 2. The arc protection system according to claim 1, wherein the arc collection module includes a display unit electrically connected to the address unit for displaying the arc in the circuit recorded by the address recording unit The address of the signal. 3. The arc protection system according to claim 1, wherein the arc acquisition module includes an arc sensor for detecting arc signals in the circuit. 4. The arc protection system according to claim 3, wherein the arc sensor adopts a passive arc probe. 5. The arc protection system according to claim 3, wherein the number of the arc sensors is less than eight. 6 . The arc protection system according to claim 1 , wherein the current detection module includes a current transformer for detecting a current increase signal in the circuit. 7 . 7. The arc protection system according to claim 1, characterized in that, the control module further comprises an alarm unit, configured to simultaneously detect the arc signal and the current collected by the arc acquisition module when the control module detects The current increase signal collected by the detection module sends out an alarm signal. 8. The arc protection system according to claim 7, wherein the alarm unit adopts an audio alarm. 9. The arc protection system according to claim 7, wherein the alarm unit adopts an alarm lamp. 10. A switchgear, characterized in that it comprises the arc protection system according to any one of claims 1-9.